If you're checking Temple City, CA tap water safety, the short answer is: average - violations are present in parts of the city and specifics depend on which water system serves your address.

Data: EPA SDWIS

Overview

We track home safety data for 1 ZIP code in Temple City, California (population ~35,136), covering 5 community water systems serving approximately 161,629 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Home Safety Score

Average Home Safety Score for Temple City: C (58/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor	What It Measures
Water Quality	EPA violations and compliance history
PFAS MCL Screen	UCMR 5 testing against the covered federal MCLs
Radon Risk	EPA radon zone classification
Annual AQI	EPA AirData county-year median with at least 90 observed days

Water Sources

Temple City water systems draw from: Groundwater, Surface water.

Lead & Copper

• Average lead level (90th percentile): 0.0019 mg/L (EPA action level: 0.015 mg/L)
• 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 2 (Moderate Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Areas with No Violations

All ZIP Codes in Temple City

• 91780 [C]

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Radon: EPA Map of Radon Zones

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Housing Age Profile

What does a median build year of 1952 mean for water safety in Temple City? It means the majority of the city's residential plumbing was installed before 1986, when lead solder was federally banned, and a large share may predate 1970, when lead pipes were commonly used - making plumbing age a central variable in household-level lead risk across much of the city.

1952

Median Year Built

80%

Pre-1986 (Lead Paint Risk)

56%

Pre-1970 (Lead Pipes Risk)

Pre-1970 (56%) 1970–1986 (24%) Post-1986 (20%)

Over half of homes in Temple City were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Temple City: Remediation Cost in Perspective

In Temple City, property values comfortably outpace what documented remediation typically costs - the equity share is proportionally low.

Median Home Value

$922,900

Est. Remediation

$1,000

Remediation as % of home value 0.1%

Remediation costs in Temple City are relatively low compared to home values. The $400–$1,600 estimated range is a small fraction of median property value. Home values are 25% above the California average.

Protecting Children from Lead in Temple City

80%

Homes Built Before 1986

0.0019

mg/L Avg Lead (Limit: 0.015)

Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

80% of Temple City housing dates to the pre-rule era, alongside aggregate readings hovering at the federal action mark - household-level confirmation through a draw-test kit fits the local picture.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.